Фрагмент из книги.
In this book, you will often see functions from RAG frameworks like LangChain and LlamaIndex. This makes sense because these RAG frameworks are handy and offer many functions we need to create RAG applications. Nevertheless, check first if you really need them. They are still at an early stage and constantly changing, which can be challenging when deploying apps to production. Since they are merely a collection of more established frameworks, you could also use the standalone frameworks behind LangChain and LlamaIndex.
